Note 3 - Fair Value Measurement (Details Textual)		3 Months Ended
	Apr. 01, 2023 shares	Mar. 31, 2023 USD ($)	Mar. 31, 2022 USD ($)	Dec. 31, 2022 USD ($)	Oct. 01, 2020 USD ($)
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability		$ 720,000	$ (3,335,000)
Shares Issued As Payment for Contingent Consideration Liability [Member] | Subsequent Event [Member]
Stock Issued During Period, Shares, New Issues (in shares) | shares	116,973
SciSafe Holdings, Inc [Member]
Business Combination, Contingent Consideration, Liability, Total		5,000,000.0		$ 4,300,000	$ 3,700,000
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability		$ 720,000	$ (3,300,000)
SciSafe Holdings, Inc [Member] | Measurement Input, Discount Rate [Member]
Business Combination, Contingent Consideration, Liability, Measurement Input		0.130			0.045
SciSafe Holdings, Inc [Member] | Measurement Input, Risk Free Interest Rate [Member]
Business Combination, Contingent Consideration, Liability, Measurement Input		0.044			0.0020
SciSafe Holdings, Inc [Member] | Measurement Input, Asset Price Volatility [Member]
Business Combination, Contingent Consideration, Liability, Measurement Input		0.71			0.60
SciSafe Holdings, Inc [Member] | Measurement Input, Revenue Volatility [Member]
Business Combination, Contingent Consideration, Liability, Measurement Input		0.31			0.15